More than likely a Cutler Hammer switch, as Skil, to my knowledge, almost exclusively contracted with CH for their switches well into the 50's ~ 60's. Are there any part numbers or any other markings beyond the amperage / voltage ratings present on the switch?
You can definitely use any 125V 9a rated toggle in its place, but I must admit that getting one with that particular button will likely be much more difficult. Have you tried taking the switch into a electrical supply house (Platt, CED, Graybar, etc.). I have ALWAYS been impressed with what they are able to source.